SPA-110是Santec可调谐激光器的扩展光学频域反射计(OFDR)设备，可以分析最紧凑和复杂的光学器件，获取反射率、透射率和动态范围。

该系统采用OFDR(光频域反射)技术，使其能够在空间域中分析光纤设备、器件的背反射和传输特性。该系统产生类似OTDR(光时域反射)的轨迹，具有更高的分辨率和精度。该系统具有5 μm的采样分辨率，能够容易识别PIC (光子集成电路)和硅光子(SiPh)器件的内部结构。

随着可调谐激光器的选择不断扩展， OFDR系统配置也不断提高，进而在被测设备的重要光谱上发挥作用，该系统不受限于有限波长范围。

Optical reflectometry is a cornerstone technique in diagnosing and characterizing optical networks, materials, and high-precision components. This technical whitepaper dives deep into Frequency-Domain Reflectometry (FDR), explaining how it works, its advantages over traditional methods, and why it matters for advanced optical testing.

In this whitepaper, you’ll uncover:

1. The fundamental concept of FDR: how sweeping frequencies and Fourier analysis yield high-resolution spatial profiles

2. Key differences between FDR (or OFDR) and Time-Domain Reflectometry (TDR) in terms of resolution, sensitivity, and measurement range

3. How FDR enables precise fault detection, impedance variation analysis, and insertion/return loss evaluation

4. Applications in fiber sensing: detecting temperature, strain, vibration, and micro-bends via distributed measurements

5. Material characterization use cases: non-destructive testing of thin films, coatings, and composite materials

6. How Santec’s Swept Photonics Analyzer (SPA) series and other instruments can be configured to leverage FDR for high-accuracy reflectometry

7. Practical system design tips: setting up high-coherence tunable lasers, detectors, and signal processing for optimal OFDR performance

Whether you're working on fiber-optic component validation, silicon photonic circuit analysis, or material science research, this guide shows you how Santec’s FDR-compatible testing solutions provide unparalleled spatial resolution and measurement fidelity.

Co-packaged optics (CPO) is revolutionizing data center and high-performance computing interconnects by integrating optical engines directly with switching ASICs. This whitepaper offers a detailed, engineer-level exploration of CPO, covering both the technological benefits and the rigorous testing requirements needed to ensure performance and reliability.

In this whitepaper, you will discover:

1. The key drivers for CPO adoption — power efficiency, bandwidth scaling, signal integrity, and form-factor optimization

2. How photonic integrated circuits (PICs) enable compact, high-density optical I/O in CPO architectures

3. Thermal challenges in co-packaged designs and best practices for thermal management during testing

4. Testing strategies for CPO modules: measuring insertion loss, return loss, polarization effects, crosstalk, and more

5. Advanced measurement solutions: how Santec’s tunable lasers, polarization synthesizers, power meters, and swept analyzers (e.g., STS system, SPA-110) can be integrated into high-precision CPO validation setups

6. Practical tips for building an automated, repeatable test flow that addresses the unique trade-offs of co-packaged optics

Whether you're developing PICs for production, characterizing module-level performance, or optimizing test processes for yield and scale, this guide shows how Santec’s measurement instruments support every aspect of CPO development.